J. Serra et al., "A proposal for a visual speech animation system for European Portuguese", in Advances in Speech and Language Technologies for Iberian Languages. Communications in Computer and Information Science, Torre Toledano, D., Ortega Giménez, A., , Teixeira, A., González Rodríguez, J., Hernández Gómez, L., San Segundo Hernández, R., and Castro, D. R., Ed., Madrid, Springer, 2012, vol. 328, pp. 267-276